Home / 2,380.95-3,285.64-1,318.76

Finding the Fourth Proportional to 2,380.95, 3,285.64 and 1,318.76

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Solution

The fourth proportional to 2,380.95, 3,285.64 and 1,318.76 is: 1,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,380.95 : 3,285.64 = 1,318.76 : x
  2. Step 2: Convert to fraction form
    2,380.95/3,285.64 = 1,318.76/x
  3. Step 3: Cross multiply
    2,380.95x = 3,285.64 × 1,318.76
  4. Step 4: Simplify right side
    2,380.95x = 4,332,975.52
  5. Step 5: Solve for x
    x = 4,332,975.52/2,380.95
  6. Step 6: Final answer
    x = 1,819.85

Related Problems

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.